IR Board Lens F1.8 mm CCTV Lens IR Board Lens Board Lens Focal length (mm):12.5 Aperture :1/1.8 IR Board Lens F1.8 mm CCTV LensIR Board LensBoard LensFocal length (mm):12.5Aperture :1/1.8 Model No.FH1218DNBFocal length (mm)12.5Aperture (D/f1/1.8Horizontal field 21°45M.O.Dm0.3Format(lnch)1/3MountM12×0.5DimensionD×L mm)φ14×14.25Weight(g)5.5Character IR Board Lens F1.8 mm CCTV Lens